Hey Dude! Awesome, I worked in theater for many years, yep, roscolux "Gels" are awesome.

The now hard to find swatches are also extremely useful, super good advice my man, well done!  ;D

Gamcolor is good as well, just look up "Theatrical Lighting Supplies" and you'll find sheets of many colors are only a few bucks a sheet. You can epoxy this material to clear pieces to really give deep color tones!!